カップリングシュガー

noun

coupling sugar

A type of sugar used in brewing or fermentation to promote carbonation, often added at bottling. The term is a direct loan from English and used in technical or hobbyist contexts.

• ビールの二に次じ発はっ酵こうにカップリングシュガーを使つかうと、きめ細こまかい泡あわができる。

  Using coupling sugar for secondary fermentation in beer produces fine bubbles.